1. Rationale
ASTM F1868-09 references a calibration fabric for use in Part C of the standard. The original supply of this fabric was included in a round-robin study to develop linear regressions for Rcf and Ref which formed the basis for the currently published slope and 4-layer measurements in the standard. This bolt of calibration fabric has since been fully consumed, and replaced with a new supply of like material from the same manufacturer. A one-time procedure has been proposed to pre-age this new fabric before initial use, and several labs have indicated willingness to evaluate this procedure and test the new material per the Part C protocol to confirm the new material is within acceptable limits. The results of this Work Item will be a revision to ASTM F1868 to incorporate the pre-aging procedure, and to generate a report summarizing the data from participating labs.
Keywords
evaporative resistance; insulation; permeability index; thermal resistance; total heat loss; Clothing; Evaporators/evaporation; Heat flow; Impedance; Leather; Moisture flow; Protective clothing; Steady-state testing; Sweating hot plate; Thermal resistance/resistivity ;
Citing ASTM Standards
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